The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 1980
Filed:
Oct. 06, 1978
Andrew G Hay, Hamilton, GB;
Peter R Mason, York, GB;
Abstract
Position detecting apparatus having a target comprising radiation emitting eans for emitting radiation to define four points in non-planar relationship such that a first set of three of the points lies in a first target plane while a second set of three of the points lies in a second target plane which may for example be substantially normal to the first target plane; a camera having a focal plane on which images of objects presented to the camera are formed, the camera being arranged for viewing said target, and being provided at said focal plane with a two-dimensional array of photo sensitive elements which can receive radiation from the radiation emitting means of the said target; and a computer arranged to scan said two dimensional array to generate signals indicative of the position of images of the radiation emitting means on the array, whereby the position of the target, and hence of an object to which it is attached, may be determined in relation to a selected reference plane.